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package gopass
import (
"errors"
"os"
)
var (
ErrInterrupted = errors.New("Interrupted")
)
// getPasswd returns the input read from terminal.
// If masked is true, typing will be matched by asterisks on the screen.
// Otherwise, typing will echo nothing.
func getPasswd(masked bool) ([]byte, error) {
var err error
var pass, bs, mask []byte
if masked {
bs = []byte("\b \b")
mask = []byte("*")
}
for {
if v, e := getch(); v == 127 || v == 8 {
if l := len(pass); l > 0 {
pass = pass[:l-1]
os.Stdout.Write(bs)
}
} else if v == 13 || v == 10 {
break
} else if v == 3 {
err = ErrInterrupted
break
} else if v != 0 {
pass = append(pass, v)
os.Stdout.Write(mask)
} else if e != nil {
err = e
break
}
}
os.Stdout.WriteString(lineEnding)
return pass, err
}
// GetPasswd returns the password read from the terminal without echoing input.
// The returned byte array does not include end-of-line characters.
func GetPasswd() ([]byte, error) {
return getPasswd(false)
}
// GetPasswdMasked returns the password read from the terminal, echoing asterisks.
// The returned byte array does not include end-of-line characters.
func GetPasswdMasked() ([]byte, error) {
return getPasswd(true)
}
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